Revenue Recognition - Schedule of Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Recovery Asset
Beginning balance	$ 9,663	$ 10,441
Net additions to sales return liability	39,939	36,028
Actual returns	(38,898)	(36,806)
Ending balance	10,704	9,663
Refund Liability
Beginning Balance	(25,667)	(24,787)
Net additions to sales return liability	(153,742)	(117,969)
Actual returns	141,692	117,089
Ending Balance	$ (37,717)	$ (25,667)